Richardson Hitchins TKO1 Mario Perez... Boxing fans in Brooklyn saw a big moment in the life of a teenager, as 19 year-old Richardson Hitchins turned pro in his hometown with a first-round technical-knockout win over California's Mario Perez (1-1). Hitchins is a Brooklyn resident who fought in the 2016 Olympics under the Haitian flag. The long-armed junior welterweight knockd Barrios down twice, once with a left and once with a right before the referee ended the mismatch. It was a nice moment for the youngster.